Synthesis of multi-porphyrin dendrimer as artificial light-harvesting antennae

Woo Dong Jang, Chi Hwa Lee, Myung Seok Choi, Makiko Osada

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

To mimic bacterial light-harvesting antenna complexes, a series of dendritic multiporphyrin arrays, nPZn-PFB (n = 2, 4; cone-shaped dendrimers, n = 8, 16; star-shaped dendrimers), were synthesized and characterized by 1H NMR and MALDI-TOF-MS spectroscopy. Photoinduced energy-transfer efficiency (ΦET) from peripheral Zn porphyrin (PZn) units to an inner core free-base porphyrin (PFB) in the dendrimers was evaluated by fluorescence measurement. Both star- and cone-shaped multi-porphyrin arrays exhibited significantly high efficiency energy transfer from the photoexcited PZn units to the energy-accepting PFB, where the star-shaped dendrimers, 8P Zn-PFB (94%) and 16PZn-PFB (88%), had a slightly higher efficiency than those of the cone-shaped dendrimers, 2PZn-PFB (92%) and 4PZn-PFB (80%), respectively.

Original languageEnglish
Pages (from-to)787-793
Number of pages7
JournalJournal of Porphyrins and Phthalocyanines
Volume13
Issue number7
DOIs
Publication statusPublished - 2009 Jul

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

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